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NEW QUESTION # 115
A company's web application is hosted on Amazon EC2 instances running behind an Application Load Balancer (ALB) in an Auto Scaling group. An AWS WAF web ACL is associated with the ALB. AWS CloudTrail is enabled and stores logs in Amazon S3 and Amazon CloudWatch Logs.
The operations team has observed some EC2 instances reboot at random. After rebooting, all access logs on the instances have been deleted. During an investigation, the operations team found that each reboot happened just after a PHP error occurred on the new-user-creation.php file. The operations team needs to view log information to determine if the company is being attacked.
Which set of actions will identify the suspect attacker's IP address for future occurrences?
Answer: A
Explanation:
AWS WAF logs capture detailed request-level information, including source IP address, request URI, headers, and rule evaluation results. According to the AWS Certified Security - Specialty documentation, AWS WAF logging is a critical detection control when application-level attacks are suspected, especially when host-based logs are unreliable or can be erased by attackers.
By configuring the AWS WAF web ACL to send logs to Amazon Data Firehose, the company ensures that all future requests are centrally captured and delivered to a durable storage service such as Amazon S3. Using Amazon Athena, the security team can query these logs to identify requests targeting specific application paths such as new-user-creation.php and extract the originating client IP addresses.
NEW QUESTION # 116
A company runs an application on a fleet of Amazon EC2 instances. The company can remove instances from the fleet without risk to the application. All EC2 instances use the same security group named ProdFleet. Amazon GuardDuty and AWS Config are active in the company's AWS account.
A security engineer needs to provide a solution that will prevent an EC2 instance from sending outbound traffic if GuardDuty generates a cryptocurrency finding event. The security engineer creates a new security group named Isolate that contains no outbound rules. The security engineer configures an AWS Lambda function to remove an EC2 instance from the ProdFleet security group and add it to the Isolate security group.
Which additional step will meet this requirement?
Answer: A
Explanation:
Amazon GuardDuty generates security findings when it detects suspicious or malicious activity, including CryptoCurrency:EC2/* findings that indicate an EC2 instance may be involved in unauthorized cryptocurrency mining. According to AWS Certified Security - Specialty documentation, GuardDuty findings are published as events to Amazon EventBridge (formerly Amazon CloudWatch Events).
Amazon EventBridge is the recommended service for building automated incident response workflows. By creating an EventBridge rule that listens for GuardDuty findings of type CryptoCurrency:EC2/*, the security engineer can automatically invoke a Lambda function to isolate the affected EC2 instance by modifying its security group attachments.
NEW QUESTION # 117
A company has contracted with a third party to audit several AWS accounts. To enable the audit, cross- account IAM roles have been created in each account targeted for audit. The auditor is having trouble accessing some of the accounts.
Which of the following may be causing this problem? (Select THREE.)
Answer: B,D,F
Explanation:
Cross-account access for an external auditor typically usesSTS AssumeRoleinto a role that exists in each target account. Three common failure points are: (1) therole ARNbeing wrong or missing, (2) the auditor lacking permission to callsts:AssumeRoleon that role, and (3) anexternal IDmismatch when the role trust policy requires it. Theexternal IDis a best practice for third-party access to mitigate the confused-deputy problem; if the trust policy includes an sts:ExternalId condition, the auditor must supply the exact expected value. If it's absent or incorrect, AssumeRole will be denied.
The auditor must also be authorized on their side (IAM user/role policy) to call sts:AssumeRole (permission), and the destination role'strust policymust trust the auditor principal. If either side is misconfigured, the assume operation fails. Finally, the auditor must reference the correctrole ARNfor each account; using an incorrect ARN (wrong account ID/role name/path) is a frequent reason only "some accounts" fail.
Incorrect password (B) is irrelevant if the auditor is using API/STS federation rather than console password auth, and EC2 instance roles (D) are not required for an external auditor. Missing/incorrect secret key (E) is possible for API auth, but the question centers on cross-account role access issues; the canonical causes are external ID, AssumeRole permission, and role ARN.
NEW QUESTION # 118
A security engineer discovers that a company's user passwords have no required minimum length. The company uses the following identity providers (IdPs):
* AWS Identity and Access Management (IAM) federated with on-premises Active Directory
* Amazon Cognito user pools that contain the user database for an AWS Cloud application Which combination of actions should the security engineer take to implement a required minimum password length? (Select TWO.)
Answer: B,D
Explanation:
Password policies are enforced at the identity provider where authentication occurs. According to the AWS Certified Security - Specialty Study Guide, when IAM is federated with an external identity provider such as on-premises Active Directory, IAM does not manage or enforce password policies. Instead, password requirements such as minimum length must be enforced directly in Active Directory Group Policy Objects.
Amazon Cognito user pools maintain their own user directory and authentication logic. Cognito provides configurable password policies, including minimum length, complexity, and expiration. To enforce a minimum password length for application users, the Cognito user pool password policy must be updated.
IAM password policies apply only to IAM users that authenticate directly with IAM and do not affect federated users or Cognito users. SCPs and IAM policies cannot enforce password length requirements.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS IAM Federation and Password Policies
Amazon Cognito User Pool Security Settings
NEW QUESTION # 119
A company is developing a new serverless application that uses AWS Lambda functions. The company uses AWS CloudFormation to deploy the Lambda functions.
The company's developers are trying to debug a Lambda function that is deployed. The developers cannot debug the Lambda function because the Lambda function is not logging its output to Amazon CloudWatch Logs.
Which combination of steps should a security engineer take to resolve this issue? (Choose two.)
Answer: A,B
Explanation:
For a Lambda function to run, the execution role assigned to it must have a trust policy that allows AWS Lambda (lambda.amazonaws.com) to assume the role. This ensures that the Lambda service can use the permissions associated with that role. The execution role also needs explicit permissions to write logs to Amazon CloudWatch Logs. Without these permissions, the Lambda function cannot create or update log streams in CloudWatch, which is necessary for logging output.
NEW QUESTION # 120
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